Perantucci Sousaphone Mouthpiece SP-3
 
This mouthpiece is based on the PT-83, with a small cup but large bore.
 
SP-3 -Sousapower 3 – Traditional Sound
Cup Diameter – 32 mm
Cup – Medium Depth Pear Shaped
Rim – 8 mm Clearly Defined Inner Edge
Throat Bore – 8.6 mm
Shank - Small (American)
Finish - Silver Plated
 
A unique balance between cup shape, throat and back bore dimensions assures excellent intonation. Sound Energy generated by the player is enhanced by these new mouthpieces. A firm embouchure interacts with and compliments the acoustical impedance generated in the instrument.
 
The results are superior: high output results in efficiency and therefore ease of performance.  Works well with BBb and CC Tubas.